Go Back  Bike Forums > Search Forums
Reload this Page >

Search Results

Notices
 
Search: Posts Made By: JohnDThompson
Showing results 1 to 50 of 1000
Search took 9.85 seconds.
09-17-19, 03:48 PM
Replies: 22
Views: 481
Posted By JohnDThompson

That's fine for a glove, which benefits from...

That's fine for a glove, which benefits from being supple and doesn't have to support your body weight. But a bicycle saddle needs to be firm and strong enough to support your body, and the...
09-16-19, 02:38 PM
Replies: 7
Views: 147
Posted By JohnDThompson

Most Tange headsets are available in either JIS...

Most Tange headsets are available in either JIS or ISO dimensions; often crown races are available separately.
09-13-19, 05:52 PM
Replies: 25
Views: 2,921
Posted By JohnDThompson

Could it be a Razesa frame with a non-original,...

Could it be a Razesa frame with a non-original, older fork?
09-13-19, 05:47 PM
Replies: 19
Views: 681
Posted By JohnDThompson

Somebody's got to have one of those nice,...

Somebody's got to have one of those nice, polished brass Empire Troubadour turntables, yes?
09-13-19, 02:58 PM
Replies: 11
Views: 402
Posted By JohnDThompson

A Sakae crank should use a standard 22mm puller...

A Sakae crank should use a standard 22mm puller thread. Are the threads in the arm damaged?
09-11-19, 06:26 PM
Replies: 83
Views: 3,986
Posted By JohnDThompson

The largest ring I currently run is 50T, on my...

The largest ring I currently run is 50T, on my Trek 720 touring bike. I have several 48T rings, one on my S3X-equipped fixed gear, and two other road bikes. And 46T on my other fixed gear bike.
09-09-19, 04:14 PM
Replies: 20
Views: 569
Posted By JohnDThompson

That could be it. The TL-UN74 measures 0.95" ID,...

That could be it. The TL-UN74 measures 0.95" ID, same as the Park BBT-22.
09-09-19, 03:51 PM
Replies: 20
Views: 569
Posted By JohnDThompson

Mine is a TL-UN74. I haven't had any problems...

Mine is a TL-UN74. I haven't had any problems with it, but I'm not sure that I've tried it with a UN-26 cartridge. It works with UN-51 and some other third party cartridges I've tried.
...
09-09-19, 07:12 AM
Replies: 24
Views: 521
Posted By JohnDThompson

Those sawed-off posts are good for salvaging the...

Those sawed-off posts are good for salvaging the often-missing rail clamp pieces, at least.
09-09-19, 06:52 AM
Replies: 20
Views: 569
Posted By JohnDThompson

Yeah, that's what I don't like about the BBT-22....

Yeah, that's what I don't like about the BBT-22. Why did they make it so tall? Shimano's own tool for the cartridge, the TL-UN74, is much shorter and you can use the bottom bracket's own bolt or nut...
09-08-19, 12:05 PM
Replies: 5
Views: 160
Posted By JohnDThompson

Yes, Aero Gran Compe. They're very short reach...

Yes, Aero Gran Compe. They're very short reach (37-43mm) and have limited vertical adjustment for the pads, so not every frame can accommodate them. They worked well enough, but the pads are...
09-08-19, 11:19 AM
Replies: 41
Views: 1,953
Posted By JohnDThompson

Bicycles are not a heavy-duty application for...

Bicycles are not a heavy-duty application for bearings, so any advantage is likely to be minimal. You could overhaul and replace your bearings several times for the cost of a set of ceramic bearings....
09-08-19, 07:35 AM
Replies: 675
Views: 131,500
Posted By JohnDThompson

Viner was an Italian marque imported by Gus Betat...

Viner was an Italian marque imported by Gus Betat in New Orleans:

N.O. Bicycle Club - Archives and History (http://www.neworleansbicycleclub.org/archives/Gus_Betat.htm)
Forum: Road Cycling
09-07-19, 09:17 PM
Replies: 26
Views: 1,617
Posted By JohnDThompson

Which was exactly my point: an aggressive...

Which was exactly my point: an aggressive geometry built on a more forgiving material may be easier to control and more comfortable than an aggressive geometry on an unforgiving material.
09-07-19, 04:58 PM
Replies: 20
Views: 583
Posted By JohnDThompson

I suspect it'll be fine. :thumb: And it has...

I suspect it'll be fine. :thumb:

And it has the benefit of being fully and easily reversible. :thumb:
09-07-19, 04:49 PM
Replies: 327
Views: 45,825
Posted By JohnDThompson

The shape is referred to as a "randonneur bend,"...

The shape is referred to as a "randonneur bend," and has been made by multiple manufacturers, including Gerry Burgess (GB), Sakae Ringyo (SR), Nitto, and others. Nitto still offers two versions of...
Forum: Road Cycling
09-07-19, 04:35 PM
Replies: 26
Views: 1,617
Posted By JohnDThompson

Maybe that's why they can get away with more...

Maybe that's why they can get away with more aggressive geometry?
Forum: Road Cycling
09-07-19, 04:29 PM
Replies: 14
Views: 425
Posted By JohnDThompson

Properly done, a helicoil repair can be stronger...

Properly done, a helicoil repair can be stronger than the original threads. What's not to like?
09-07-19, 02:50 PM
Replies: 11
Views: 401
Posted By JohnDThompson

Make sure that the end of the extractor tool...

Make sure that the end of the extractor tool actually fits through the opening in the arm, otherwise the tool pushes on the arm instead of the spindle, achieving nothing.

If this is the case,...
09-07-19, 02:44 PM
Replies: 2
Views: 205
Posted By JohnDThompson

Nitto actually makes a tool for that purpose: ...

Nitto actually makes a tool for that purpose:

https://www.benscycle.com/Assets/product_images/bens/large/870-900.jpg...
09-06-19, 03:25 PM
Replies: 20
Views: 583
Posted By JohnDThompson

I did a similar modification for HenryIII several...

I did a similar modification for HenryIII several years ago, but instead of silver-brazing brass bar stock, I just built up a blob of brass and filed it into a stop:
...
09-06-19, 03:02 PM
Replies: 8
Views: 375
Posted By JohnDThompson

It's fairly easy to modify a standard, barrel-end...

It's fairly easy to modify a standard, barrel-end derailleur cable to fit a disk-end lever. Squeeze the barrel in a vise until it is narrow enough to fit the slot for the disk in the lever. A couple...
09-06-19, 08:08 AM
Replies: 8
Views: 217
Posted By JohnDThompson

I agree with juvela; it looks like a Universal...

I agree with juvela; it looks like a Universal lever. Reproduction hoods are available from e.g. Rustines.
09-06-19, 07:47 AM
Replies: 16
Views: 419
Posted By JohnDThompson

You only need one half-link. There's nothing...

You only need one half-link. There's nothing multiple half-links can do that you can't accomplish with a single half-link (unless you intend to install them on multiple bikes).
Forum: Road Cycling
09-05-19, 02:29 PM
Replies: 23
Views: 1,045
Posted By JohnDThompson

+1 this. And the more portable VAR bead jack to...

+1 this. And the more portable VAR bead jack to carry on the road. It doesn't have quite the stiffness or leverage of the Kool Stop, but still gets the job done.
09-05-19, 07:55 AM
Replies: 17
Views: 302
Posted By JohnDThompson

Maybe for a while. Thread engagement with the...

Maybe for a while. Thread engagement with the cups will be poor. A more permanent fix would be a threadless cartridge or reaming and tapping the shell to accept Italian thread cups.



I measure...
09-04-19, 09:22 PM
Replies: 10
Views: 335
Posted By JohnDThompson

Further work finds the Shimano part number for...

Further work finds the Shimano part number for the official tool: TL-FW20
09-04-19, 04:28 PM
Replies: 12
Views: 765
Posted By JohnDThompson

Sheldon Brown describes an elegant fixed gear...

Sheldon Brown describes an elegant fixed gear dismount technique. It takes a little practice, but once mastered works well:

https://www.sheldonbrown.com/fixed.html#mounting
Forum: Framebuilders
09-04-19, 04:09 PM
Replies: 9
Views: 629
Posted By JohnDThompson

+1 this. Those look like the low-rider mounts we...

+1 this. Those look like the low-rider mounts we used at Trek. They go completely through the blade, so they're anchored in two places. Unthreaded, with a bolt to pass through the mount secured with...
09-04-19, 03:47 PM
Replies: 10
Views: 335
Posted By JohnDThompson

That'll be the tricky part. I looked on my tool,...

That'll be the tricky part. I looked on my tool, and it is completely unmarked so I can't give you a part number to search for, and I bought it new forty years ago or so when they were readily...
09-04-19, 03:30 PM
Replies: 5
Views: 173
Posted By JohnDThompson

Or just use the Sakae Ringyo post, especially if...

Or just use the Sakae Ringyo post, especially if it's the "Royal" model.

If you're trying to keep the bike "all Campy," putting the SR parts on the Campy post is sacrilege enough already, and...
09-04-19, 03:19 PM
Replies: 22
Views: 530
Posted By JohnDThompson

Simplex made a retrofriction bar-end shifter,...

Simplex made a retrofriction bar-end shifter, which, like the downtube retrofriction shifter, tends to be pricey. But if you can justify the cost, the buttery-smooth feel is to die for.
...
09-04-19, 02:51 PM
Replies: 10
Views: 335
Posted By JohnDThompson

I think the OP is referring to the older, long...

I think the OP is referring to the older, long deprecated Shimano splined tool, which is not at all compatible with the newer tool. Park, et al only make versions of the new tool. I'm not aware of...
09-04-19, 02:37 PM
Replies: 98
Views: 4,695
Posted By JohnDThompson

Yes, large abrasions can take a long time to...

Yes, large abrasions can take a long time to heal, and they heal from the margins inward. Unless your doctor told you otherwise, I wouldn't bother with the aquaphor; it is intended more for "minor...
09-04-19, 06:25 AM
Replies: 14
Views: 357
Posted By JohnDThompson

The best tool is the VAR-30, with the 30/2 jaw: ...

The best tool is the VAR-30, with the 30/2 jaw:

http://www.os2.dhs.org/~john/var30.jpg

Failing that, I'd use the Sheldon Brown universal fixed cup tool. No worries about rounding off the flats.
Forum: Road Cycling
09-03-19, 03:36 PM
Replies: 23
Views: 806
Posted By JohnDThompson

Usually I can just grab it and roll it off the...

Usually I can just grab it and roll it off the rim. Once you get a short section off the rim, it becomes easier. For particularly stubborn cases you can shove a tire iron between the base tape and...
Forum: Road Cycling
09-03-19, 03:26 PM
Replies: 69
Views: 25,625
Posted By JohnDThompson

Biopace rings are meant to be used in a certain...

Biopace rings are meant to be used in a certain orientation with the crank arm, not for shifting reasons, but because that's how Shimano's ergonomic research indicted they should be oriented.

You...
Forum: Road Cycling
09-03-19, 03:20 PM
Replies: 69
Views: 25,625
Posted By JohnDThompson

Shimano spent a good deal of time and money on...

Shimano spent a good deal of time and money on Biopace. The lack of portable power meters meant that Biopace was
developed and tested more in the lab, where sophisticated but non-portable test...
09-03-19, 02:27 PM
Replies: 12
Views: 364
Posted By JohnDThompson

BITD, we used steel Sturmey-Archer cog spacers...

BITD, we used steel Sturmey-Archer cog spacers for this. These will fit under an English or French fixed cup, no problem. For the larger diameter Italian cup, we just snipped the spacer so it could...
09-03-19, 04:50 AM
Replies: 47
Views: 2,644
Posted By JohnDThompson

As CliffordK notes, replacing the crown race is...

As CliffordK notes, replacing the crown race is the "best practice" means of fixing the "indexed steering" issue. If you're not ready for that yet, using loose balls rather than retained balls...
09-02-19, 05:59 AM
Replies: 9
Views: 359
Posted By JohnDThompson

Yes, that was a weakness of those shifters. You...

Yes, that was a weakness of those shifters. You used to be able to buy the indexing pod separately, and it was interchangeable between 6 and 7-speed, Dura-Ace and 600, so you could convert a 6-speed...
09-01-19, 06:48 PM
Replies: 17
Views: 692
Posted By JohnDThompson

Five-arm cranks came in a large number of bolt...

Five-arm cranks came in a large number of bolt circle diameters, including 86, 94, 110, 118, 120, 122, 128, 130, 135, 144, and 151mm; maybe a few more I missed. But most recently 110 and 130 are the...
09-01-19, 06:45 AM
Replies: 8
Views: 443
Posted By JohnDThompson

+1 this. And you only need to remove the hardware...

+1 this. And you only need to remove the hardware from one side of the axle. Leave the other side in place and there's no confusion when it comes to reassembly.
Forum: Road Cycling
08-31-19, 12:16 PM
Replies: 23
Views: 806
Posted By JohnDThompson

AFAIK, all tubular tires fold. You could also...

AFAIK, all tubular tires fold. You could also carry them "bandoleer" style, figure-8 with an arm through each loop and the cross on your back. This is good for when you think you might need multiple...
08-31-19, 12:03 PM
Replies: 47
Views: 2,445
Posted By JohnDThompson

I have several sets of tights: a couple pair of...

I have several sets of tights: a couple pair of wool Protogs tights I've had since the late 70s, and a couple pair of more modern lycra tights. The lycra tights have a chamois. The Protogs tights do...
08-30-19, 03:48 PM
Replies: 7
Views: 828
Posted By JohnDThompson

Some are, some aren't. BMX freewheels with a...

Some are, some aren't. BMX freewheels with a tooth count less than 15 use a metric thread to mount on the hub that isn't compatible with track or "flip-flop" SS/FG hubs.



Any...
08-30-19, 11:40 AM
Replies: 17
Views: 692
Posted By JohnDThompson

Good point. Depending on what compact crank is...

Good point. Depending on what compact crank is used, the OP may "get lucky" and be able to retain the old bottom bracket, but it's not given.
08-30-19, 11:20 AM
Replies: 17
Views: 692
Posted By JohnDThompson

Why replace a perfectly good crank and bottom...

Why replace a perfectly good crank and bottom bracket? If the rings are worn, just buy new rings in the sizes you want.
08-29-19, 02:43 PM
Replies: 47
Views: 2,429
Posted By JohnDThompson

No, not Helicomatic lockrings. Helicomatic...

No, not Helicomatic lockrings. Helicomatic freewheels use a separate splined lockring rather than a threaded sprocket to hold the freewheel in place:
...
08-29-19, 02:29 PM
Replies: 6
Views: 327
Posted By JohnDThompson

Assuming that the threaded driver hadn't been...

Assuming that the threaded driver hadn't been replaced with the splined driver at some point in the past, anyway. Given the difficulty changing sprokets with the threaded driver, I suspect many of...
Showing results 1 to 50 of 1000
 


 
Forum Jump

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.